Worcester Controls C44Cryogenic 3-Piece Ball Valves

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High Flow RateThe high Cv available from a ball valve compared with aglobe valve makes the C44 ideal for loading stations wherespeed of delivery is critical. The valve is also available asfullbore up to DN40 as the C59 series.

Low Body MassThe one-piece design minimises the mass of the body andtherefore makes the valve economic to use. It also provides aweight advantage, making the valve ideal for road tankers andother transportation requirements.

Ease of OperationThe unique low torque seat design and the 90 degreeoperation of the ball valve makes it ideal for use with bothpneumatic and electric actuators with the additional benefit ofrotary control if required. When manually operated, the leverprovides visual indication of the valve orientation (open orclosed) which is critical in the safe loading and unloading ofliquid gases.

Ease of MaintenanceThe 3-piece concept provides the benefit of easy maintenancethrough the "slide out" body method.

Flowserve Worcester's experience and expertise in thedesign of cryogenic ball valves has been recognisedthroughout the process industry for over 30 years. Utilisinga combination of our Fluorofill seat material and our unique'S' gasket body seal, the valve provides positive shut-off inthe most demanding of cryogenic applications. From theoriginal C44 R5 and MC44 designs the seat and body sealshave remained a constant feature and with both productsnow rationalised into the C44 R7, additional technicaladvantages have been included to provide what isconsidered the best cryogenic ball valve on the market.

The Worcester 3-piece ball valve offers a number of technicaladvantages over other types of valve.

Tested and certified to EN1626 and can be used on TPEDCATIII applications.

Cryogenic Valve DesignOverview . . . . . . . . . . . . . . . . . . . . . . . 2-3

Parts/Materials . . . . . . . . . . . . . . . . . . . . .4

Valve Dimensions . . . . . . . . . . . . . . . . . . .5

Throttling Control of Cryogenics . . . . . . . 6

Other Cryogenic Products . . . . . . . . . . . .7

Contents

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Automation - Solid actuator mounting platform foron/off and control applications

Extension - minimal gap to reduce frost line andminimise heat transfer

Body - One piece design provides optimum strengthand low body mass

'S' Gasket - 316 coated PTFE to compensate forthermal fluctuations

Seat - Low torque design manufactured in FluorofillPTFE

Stem - One piece anti-blowout design with ball reliefhole position indication

Ball - With cavity pressure relief hole and fool-proofstem alignment device

Packing - Chevron design for optimum sealing lifeconsisting of a PTFE chervon seal captured between2 graphite chevron seals.

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ITEM DESCRIPTION MATERIAL12. Split Thrust Bearing (Halves) Polyfill

13. Split Ring (Halves) Stainless Steel ASTM A479/316L

14. Belleville Washer Stainless Steel AISI 301

15. Spring Washer Stainless Steel AISI 300 Series

16. Stem & Wrench Nut Stainless Steel AISI 300 Series/Zinc Plated

17. Body Nut Stainless Steel ASTM A194 Gr.8

18. Body Bolt Stainless Steel ASTM A193 Gr.B8/ENP

19. Thrust Bearing Fluorofill

20. Nameplate Stainless Steel AISI 304

21. Wrench/Sleeve Assembly St. Steel AISI 300 Series/Vinyl Coated

22. Stop Pin Stainless Steel AISI 300 Series

23. Locking Clip Carbon Steel Plated

ITEM DESCRIPTION MATERIAL1. Body Stainless Steel ASTM A351/CF3M

Brass ASTM B283 C37700

2. Extension Stainless Steel ASTM A312/316L

3. Bonnet Plate Stainless Steel ASTM A743/CF3M

4. Pipe End Stainless Steel ASTM A351/CF3MBrass BS2872 CZ122

5. Ball Stainless Steel ASTM A479/316 Cond. A

6. Stem Assembly Stainless Steel ASTM A479/316 Cond. A

7. Seat Fluorofill

8. Body Seal Stainless Steel AISI 316/TFE Coated

9. Packing Follower (Bottom) Stainless Steel ASTM A479/316L

10. Packing Ring Crane Chemlon V-Ring/Teflon

11. Packing Follower (Top) Stainless Steel ASTM A479/316L

Parts/Materials List

16

15

21

23

16

14

11

10

9

19

6

12

13

18

22

3

2

17

4 5

4

8

7

1

20

7

8

5

Valve Dimensions

Valve Port A B C D E F G H J K M N S U V W X Z Approx. Size Dia. Max. Weight(mm) (kg)

DN15 11.1 65.4 20.58 31.8 31.8 32.7 184.21 199.64 199.9 M6 40 7.5 7/16-20 165.1 M6 175.8 9.5 63.5 47.6 1.4

DN20 14.3 71.0 24.55 38.1 37.4 35.5 186.75 202.18 202.5 M6 45 7.5 7/16-20 165.1 M6 178.3 9.5 63.5 54.4 1.6

DN25 20.6 93.7 31.69 44.5 49.3 46.9 201.88 226.31 227.1 M8 60 7.5 7/16-20 165.1 M6 202.5 9.7 63.5 65.4 2.3

DN40 31.8 114.6 48.35 57.2 69.6 57.3 241.83 259.84 264.8 M10 80 8.67 9/16-18 181.0 M6 230.9 8.7 50.0 80.3 5.0

DN50 38.1 127.1 56.28 66.7 79.1 63.6 246.40 264.41 269.4 M10 90 8.67 9/16-18 181.0 M6 235.5 8.7 50.0 90.4 5.9

The Worcester V-Flow provides positive shut-off with accurate control by utilising a cryogenic flourofill seat downstream and a metal profiled seat upstream. The choice of seat profile on the upstream seat is dependent on the flow conditions required. The V-Flow is ideally suited for either electric actuation using a

75 series Norbro DataFlo P or pneumatic 40R series with a PMV positioner.The combination of the V-Flow with the cryogenic C44 design provides an ideal cryogenic control valve for a variety of applications from food freezing to high purity gases.

Throttling Control of Cryogenics

The relationship between ball position and characterised seat allows for precision throttling control.

The V~Flow control valves are sized to ideally control between 20 - 80% opening of the valve.

Upstream Seat Selection (some typical examples)

Flow Characteristic Options

Slotted Seat(linear characteristic)

Custom Seats(special applications)

30° Seat(equal percentage)

60° Seat(equal percentage)

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Other Cryogenic Products

For petrochemical requirements the CF51/52 firesafe cryogenic valve is available utilising the same ball and seats as used in the C44 valve.

CF51/52

Using the C44 concept for diverting flow, the DC13 is a 90 degree operationvalve.

DC13

The cryogenic version of our B18 provides a true multi-port design.

CB18

For control of liquid gases the VC44 valve utilises the profiled metal seat fromthe proven V-Flow control valve (see p6).

VC44

For non-continuous cryogenic applications, the CN44 (non-extended) is idealfor drains on cryogenic lines.The valve contains the same ball, seats and body seals as the C44.

CN44

The cryogenic valve is also available as full bore up to 40mm bore for applications where high flow rates are required.

C59

Valve Size Flow Coefficients Equivalent Lengthof Pipe

mm in Cv Kv Feet Metres

8-15 ¼-½ 8.3 7.2 1.9 0.58

20 ¾ 13.6 11.8 5.5 1.67

25 1 37.5 32.6 3.0 0.91

32 1¼ 37.7 32.7 4.6 1.4

40 1½ 79.5 69.1 3.9 1.19

50 2 106 92 9.0 2.28

Cv – Flow in US GPM Pressure – psiKv – Flow in M³/hr Pressure – bar

Flowserve Flow ControlA Division of Flowserve GB LtdBurrell Road, Haywards HeathWest Sussex RH16 1TLUnited KingdomTelephone: +44 (0)1444 314400Telefax: +44 (0)1444 314401Email: wvukinfo@flowserve.com

To find your local Flowserve representative:

For more information about Flowserve Corporation,visit www.flowserve.com or call USA 1 800 225 6989

FCD WCEBR0013-02 Printed in Germany. (Replaces PB06 Rev 11/02)

Due to continuous development of our product range, we reserve the right to alter the dimensions and information contained in this leaflet as required.Information given in this leaflet is made in good faith and based upon specific testing but does not, however, constitute a guarantee.

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EN 1626 Compliant product[49]

Standards of Compliance Technical Information

Pressure/Temperature Ratings

• Road tankers

• Terminal unloading stations

• Food freezing systems

• High purity cryogenic gas systems

• Steel production plants

• LN2 and CO2 storage vessels

and many other services and applications

Typical Applications

All valves are built inthe clean room and are

suitable for oxygenservice.

1. Screwed, butt weld and socket weld variations are available.

2. When wrench not fitted, flats on stem, when parallel topipeline axis, denote ball open.

3. All weld end valves are assembled with ‘S’ gasket ring bodyconnector seals with additional seals attached loose. Thisprovides for the valve to be tested by Worcester Controls,disassembled by the customer to weld inline, andreassembled-Instructions will be supplied for fitting bodyseals.

4. All valves are built in a clean room and are suitable for oxygenservice.

5. Installation. Operating and Maintenance Instructions suppliedwith the product and are also available on request.

6. Installation. Stem to be installed 45o max from vertical.

Notes

Butt Weld Valves Weld Preparation:SCH 40 & 10: BS 2633 suitablefor Schedule Pipe to BS 1600

Socket Weld Valves Prepared for assembly to plain end pipe inaccordance with BS 1600

Screwed Valves Threaded Specification:BSP Taper - BS21/ EN 10226-1BSP Parallel - ISO 228/1NPT - ASNI B1.20.1

Test Rating Valves are subjected to the requirements ofEN 12266-1EN1626 (Valves for Cryogenic service)